
var util = {
    css: function (elem, obj) {
        for (var i in obj) {
            elem.style[i] = obj[i];
        }
    },
    hasClass: function (elem, classN) {
        var className = elem.getAttribute("class");
        return className.indexOf(classN) != -1;
    }
};

function Color_picker(opt) {
    if (this === window) throw `Colorpicker: Can't call a function directly`;
    this.init(opt);
};

Color_picker.prototype = {
    init(opt) {
        let { el, initColor = "rgb(255,0,0)", allMode = ['hex', 'rgb'], color = '' } = opt;
        var elem = document.getElementById(el);

        if (!(elem && elem.nodeType && elem.nodeType === 1)) {
            throw `Colorpicker: not found  ID:${el}  HTMLElement,not ${{}.toString.call(el)}`;
        }

        this.Opt = {
            ...opt,
            el,
            initColor,
            allMode,
            color
        }

        this.bindElem = elem; // 绑定的元素
        this.elem_wrap = null; // 最外层容器
        this.fixedBg = null; // 拾色器后面固定定位的透明div 用于点击隐藏拾色器
        this.elem_colorPancel = null; // 色彩面板
        this.elem_picker = null; // 拾色器色块按钮
        this.elem_barPicker1 = null; // 颜色条
        this.elem_hexInput = null; // 显示hex的表单
        this.elem_showColor = null; // 显示当前颜色
        this.elem_showColor1 = null; // 显示当前颜色
        this.elem_showModeBtn = null; // 切换输入框模式按钮
        this.elem_inputWrap = null; // 输入框外层容器

        this.pancelLeft = 0;
        this.pancelTop = 0;

        this.downX = 0;
        this.downY = 0;
        this.moveX = 0;
        this.moveY = 0;

        this.pointLeft = 0;
        this.pointTop = 0;

        this.current_mode = 'hex'; // input框当前的模式

        this.rgba = { r: 0, g: 0, b: 0, a: 1 };
        this.hsb = { h: 0, s: 100, b: 100 };


        var _this = this, rgb = initColor.slice(4, -1).split(",");

        this.rgba.r = parseInt(rgb[0]);
        this.rgba.g = parseInt(rgb[1]);
        this.rgba.b = parseInt(rgb[2]);

        var body = document.getElementsByTagName("body")[0],
            div = document.createElement("div");

        div.innerHTML = this.render();
        body.appendChild(div);

        this.elem_wrap = div;
        this.fixedBg = div.children[0];
        this.elem_colorPancel = div.getElementsByClassName("color-pancel")[0];
        this.pancel_width = this.elem_colorPancel.offsetWidth;
        this.pancel_height = this.elem_colorPancel.offsetHeight;
        this.elem_picker = div.getElementsByClassName("pickerBtn")[0];
        // this.elem_colorPalette = div.getElementsByClassName("color-palette")[0];
        this.elem_showColor = div.getElementsByClassName("colorpicker-showColor")[0];
        this.elem_showColor1 = div.getElementsByClassName("colorpicker-showColor1")[0];
        this.elem_barPicker1 = div.getElementsByClassName("colorBar-color-picker")[0];
        /*   this.elem_barPicker2 = div.getElementsByClassName("colorBar-opacity-picker")[0]; */
        this.elem_hexInput = div.getElementsByClassName("colorpicker-hexInput")[0];
        this.elem_showModeBtn = div.getElementsByClassName("colorpicker-showModeBtn")[0];
        this.elem_inputWrap = div.getElementsByClassName("colorpicker-inputWrap")[0];
        /*  this.elem_opacityPancel = this.elem_barPicker2.parentNode.parentNode.children[1]; */

        // var rect = this.bindElem.getBoundingClientRect();
        var elem = this.bindElem;
        var top = elem.offsetTop;
        var left = elem.offsetLeft;
        while (elem.offsetParent) {
            top += elem.offsetParent.offsetTop;
            left += elem.offsetParent.offsetLeft;
            elem = elem.offsetParent;
        }

        this.pancelLeft = left-32;
        this.pancelTop = top + this.bindElem.offsetHeight+25;
        util.css(div, {
            "position": "absolute",
            "z-index": 2023,
            "display": 'none',
            "left": (left-47) + "px",
            "top": (top+12) + this.bindElem.offsetHeight + "px"
        });
        div.classList.add("Color-Picker");
        div.setAttribute("id", "Color-Picker")

        this.bindMove(this.elem_colorPancel, this.setPosition, true);
        this.bindMove(this.elem_barPicker1.parentNode, this.setBar, false);
        /*  this.bindMove(this.elem_barPicker2.parentNode,this.setBar,false); */

        this.bindElem.addEventListener("click", function () {
            _this.show();
        }, false);

        this.fixedBg.addEventListener("click", function (e) {
            _this.hide();
        }, false)

        this.elem_showModeBtn.addEventListener("click", function () {
            _this.switch_current_mode();
        }, false)

        this.elem_wrap.addEventListener("input", function (e) {
            var target = e.target, value = target.value;
            _this.setColorByInput(value);
        }, false);

        // this.elem_colorPalette.addEventListener("click", function (e) {
        //     if (e.target.tagName.toLocaleLowerCase() == "p") {
        //         let colorStr = e.target.style.background;
        //         let rgb = colorStr.slice(4, -1).split(",");
        //         let rgba = {
        //             r: parseInt(rgb[0]),
        //             g: parseInt(rgb[1]),
        //             b: parseInt(rgb[2])
        //         }
        //         switch (_this.current_mode) {
        //             case "hex":
        //                 _this.setColorByInput("#" + _this.rgbToHex(rgba))
        //                 break;
        //             case 'rgb':
        //                 let inputs = _this.elem_wrap.getElementsByTagName("input")
        //                 inputs[0].value = rgba.r;
        //                 inputs[1].value = rgba.g;
        //                 inputs[2].value = rgba.b;
        //                 _this.setColorByInput(colorStr)
        //                 /* 	_this.hsb = _this.rgbToHsb(rgba); */
        //                 break;
        //         }

        //     }
        // }, false);

        (color != '' && this.setColorByInput(color));
    },
    render: function () {
        var tpl =
            `<div style="position: fixed; top: 0px; right: 0px; bottom: 0px; left: 0px;"></div>
            <div style="position: inherit;z-index: 100;display: flex;box-shadow: rgba(0, 0, 0, 0.3) 0px 0px 2px, rgba(0, 0, 0, 0.3) 0px 4px 8px;padding: 15px; background: #FFF; border-radius: 8px;">
                <div class="colorpicker-pancel" style="background: rgb(255, 255, 255);box-sizing: initial; width: 300px; font-family: Menlo;">
                    <div style="width: 100%; padding-bottom: 55%; position: relative; border-radius: 8px; overflow: hidden;">
                        <div class="color-pancel" style="position: absolute; top: 0px; right: 0px; bottom: 0px; left: 0px; background: rgb(${this.rgba.r},${this.rgba.g},${this.rgba.b})">
                            <style>
                                .saturation-white {background: -webkit-linear-gradient(to right, #fff, rgba(255,255,255,0));background: linear-gradient(to right, #fff, rgba(255,255,255,0));}
                                .saturation-black {background: -webkit-linear-gradient(to top, #000, rgba(0,0,0,0));background: linear-gradient(to top, #000, rgba(0,0,0,0));}
                            </style>
                            <div class="saturation-white" style="position: absolute; top: 0px; right: 0px; bottom: 0px; left: 0px;">
                                <div class="saturation-black" style="position: absolute; top: 0px; right: 0px; bottom: 0px; left: 0px;">
                                </div>
                                <div class="pickerBtn" style="position: absolute; top: 0%; left: 100%; cursor: default;">
                                    <div style="width: 12px; height: 12px; border-radius: 6px; box-shadow: rgb(255, 255, 255) 0px 0px 0px 1px inset; transform: translate(-6px, -6px);">
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                    <div style="padding: 0;">
                        <div class="flexbox-fix" style="display: flex;align-items: center;height: 56px;">
                            <div style="width: 32px;">
                                <div style="width: 16px; height: 16px; border-radius: 8px; position: relative; overflow: hidden;">
                                    <div class="colorpicker-showColor" style="position: absolute; top: 0px; right: 0px; bottom: 0px; left: 0px; border-radius: 8px; box-shadow: rgba(0, 0, 0, 0.1) 0px 0px 0px 1px inset; background:rgb(${this.rgba.r},${this.rgba.g},${this.rgba.b}); z-index: 2;"></div>
                                    <div class="" style="position: absolute; top: 0px; right: 0px; bottom: 0px; left: 0px; background: url(&quot;&quot;) left center;"></div>
                                </div>
                            </div>
                            <div style="-webkit-box-flex: 1; flex: 1 1 0%;"><div style="height: 24px; position: relative;">
                                <div style="position: absolute; top: 0px;right: 0px; bottom: 0px; left: 0px;">
                                    <div class="hue-horizontal" style="padding: 0px 2px; position: relative; height: 100%; border-radius: 12px;">
                                        <style>
                                            .hue-horizontal {background: linear-gradient(to right, #f00 0%, #ff0 17%, #0f0 33%, #0ff 50%, #00f 67%, #f0f 83%, #f00 100%);background: -webkit-linear-gradient(to right, #f00 0%, #ff0 17%, #0f0 33%, #0ff 50%, #00f 67%, #f0f 83%, #f00 100%);}
                                            .hue-vertical {background: linear-gradient(to top, #f00 0%, #ff0 17%, #0f0 33%,#0ff 50%, #00f 67%, #f0f 83%, #f00 100%);background: -webkit-linear-gradient(to top, #f00 0%, #ff0 17%,#0f0 33%, #0ff 50%, #00f 67%, #f0f 83%, #f00 100%);}
                                        </style>
                                        <div  class="colorBar-color-picker" style="position: absolute; left: 0%; top: 1.6px;">
                                            <div style="width: 22px; height: 22px; border-radius: 12px; padding: 2px; transform: translate(-6px, -1px); background-color: rgb(248, 248, 248); box-shadow: rgba(0, 0, 0, 0.37) 0px 1px 4px 0px;">
                                                <div class="colorpicker-showColor1" style="width: 100%; height: 100%; border-radius: 12px; background:rgb(${this.rgba.r},${this.rgba.g},${this.rgba.b});"></div>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                    <div class="flexbox-fix" style="display: flex;">
                        <div class="colorpicker-showModeBtn" style="margin-right: 12px; text-align: left; position: relative;">
                            <div style="margin-left: -4px; cursor: pointer; position: relative;">
                                <svg viewBox="0 0 24 24" style="width: 24px; height: 24px; border: 1px solid transparent; border-radius: 5px;"><path fill="#333" d="M12,5.83L15.17,9L16.58,7.59L12,3L7.41,7.59L8.83,9L12,5.83Z"></path><path fill="#333" d="M12,18.17L8.83,15L7.42,16.41L12,21L16.59,16.41L15.17,15Z"></path></svg>
                            </div>
                        </div>
                        <div class="flexbox-fix colorpicker-inputWrap" style="-webkit-box-flex: 1; flex: 1 1 0%; display: flex; margin-left: -6px;">
                            ${this.getInputTpl()}
                        </div>
                    </div>
                </div>
            </div>
        </div>`;
        return tpl;
    },
    getInputTpl: function () {
        var current_mode_html = "";
        switch (this.current_mode) {
            case 'hex':
                var hex = "#" + this.rgbToHex(this.HSBToRGB(this.hsb));
                current_mode_html += `
                <div style="padding-left: 6px; width: 100%;">
                    <div style="position: relative;">
                        <input class="colorpicker-hexInput" value="${hex}" spellcheck="false" style="font-size: 11px; color: rgb(51, 51, 51); width: 100%; border-radius: 2px; border: none; box-shadow: rgb(218, 218, 218) 0px 0px 0px 1px inset; height: 21px; text-align: center;">
                    </div>
                </div>`;
                break;
            case 'rgb':
                for (var i = 0; i < 3; i++) {
                    current_mode_html +=
                    `<div style="padding-left: 6px; width: 100%;">
                        <div style="position: relative;">
                            <input class="colorpicker-hexInput" value="${this.rgba['rgb'[i]]}" spellcheck="false" style="font-size: 11px; color: rgb(51, 51, 51); width: 100%; border-radius: 2px; border: none; box-shadow: rgb(218, 218, 218) 0px 0px 0px 1px inset; height: 21px; text-align: center;">
                        </div>
                    </div>`;
                }
            default:
        }
        return current_mode_html;
    },
    // getPaletteColorsItem: function () {
    //     let str = '';
    //     let palette = ["rgb(0, 0, 0)", "rgb(67, 67, 67)", "rgb(102, 102, 102)", "rgb(204, 204, 204)", "rgb(217, 217, 217)", "rgb(255, 255, 255)",
    //         "rgb(152, 0, 0)", "rgb(255, 0, 0)", "rgb(255, 153, 0)", "rgb(255, 255, 0)", "rgb(0, 255, 0)", "rgb(0, 255, 255)",
    //         "rgb(74, 134, 232)", "rgb(0, 0, 255)", "rgb(153, 0, 255)", "rgb(255, 0, 255)", "rgb(230, 184, 175)", "rgb(244, 204, 204)",
    //         "rgb(252, 229, 205)", "rgb(255, 242, 204)", "rgb(217, 234, 211)", "rgb(208, 224, 227)", "rgb(201, 218, 248)", "rgb(207, 226, 243)",
    //         "rgb(217, 210, 233)", "rgb(234, 209, 220)", "rgb(221, 126, 107)", "rgb(234, 153, 153)", "rgb(249, 203, 156)", "rgb(255, 229, 153)",
    //         "rgb(182, 215, 168)", "rgb(162, 196, 201)", "rgb(164, 194, 244)", "rgb(159, 197, 232)", "rgb(180, 167, 214)"]
    //     palette.forEach(item => str += `<p style='width:20px;height:20px;background:${item};margin:0 5px;border: solid 1px #d0d0d0;'></p>`)
    //     return str;
    // },
    setPosition(x, y) {
        var LEFT = parseInt(x - this.pancelLeft),
            TOP = parseInt(y - this.pancelTop);

        this.pointLeft = Math.max(0, Math.min(LEFT, this.pancel_width));
        this.pointTop = Math.max(0, Math.min(TOP, this.pancel_height));

        util.css(this.elem_picker, {
            left: this.pointLeft + "px",
            top: this.pointTop + "px"
        })
        this.hsb.s = parseInt(100 * this.pointLeft / this.pancel_width);
        this.hsb.b = parseInt(100 * (this.pancel_height - this.pointTop) / this.pancel_height);

        this.setShowColor();
        this.setValue(this.rgba);

    },
    setBar: function (elem, x) {
        var elem_bar = elem.getElementsByTagName("div")[0],
            rect = elem.getBoundingClientRect(),
            elem_width = elem.offsetWidth,
            X = Math.max(0, Math.min(x - rect.x, elem_width));

        if (elem_bar === this.elem_barPicker1) {
            util.css(elem_bar, {
                left: X + "px"
            });
            this.hsb.h = parseInt(360 * X / elem_width);
        } else {
            util.css(elem_bar, {
                left: X + "px"
            });
            this.rgba.a = X / elem_width;
        }

        this.setPancelColor(this.hsb.h);
        this.setShowColor();
        this.setValue(this.rgba);

    },
    setPancelColor: function (h) {
        var rgb = this.HSBToRGB({ h: h, s: 100, b: 100 });

        util.css(this.elem_colorPancel, {
            background: 'rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ',' + this.rgba.a + ')'
        });
    },
    setShowColor: function () {
        var rgb = this.HSBToRGB(this.hsb);

        this.rgba.r = rgb.r;
        this.rgba.g = rgb.g;
        this.rgba.b = rgb.b;

        util.css(this.elem_showColor, {
            background: 'rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ',' + this.rgba.a + ')'
        });
        util.css(this.elem_showColor1, {
            background: 'rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ',' + this.rgba.a + ')'
        });
    },
    setValue: function (rgb) {
        var hex = "#" + this.rgbToHex(rgb);
        this.elem_inputWrap.innerHTML = this.getInputTpl();
        this.Opt.change(this.bindElem, hex);
    },
    setColorByInput: function (value) {
        var _this = this;
        switch (this.current_mode) {
            case "hex":
                value = value.slice(1);
                if (value.length == 3) {
                    value = '#' + value[0] + value[0] + value[1] + value[1] + value[2] + value[2];
                    this.hsb = this.hexToHsb(value);
                } else if (value.length == 6) {
                    this.hsb = this.hexToHsb(value);
                }
                break;
            case 'rgb':
                var inputs = this.elem_wrap.getElementsByTagName("input"),
                    rgb = {
                        r: inputs[0].value ? parseInt(inputs[0].value) : 0,
                        g: inputs[1].value ? parseInt(inputs[1].value) : 0,
                        b: inputs[2].value ? parseInt(inputs[2].value) : 0
                    };

                this.hsb = this.rgbToHsb(rgb);
        }
        this.changeViewByHsb();
    },
    changeViewByHsb: function () {
        this.pointLeft = parseInt(this.hsb.s * this.pancel_width / 100);
        this.pointTop = parseInt((100 - this.hsb.b) * this.pancel_height / 100);
        util.css(this.elem_picker, {
            left: this.pointLeft + "px",
            top: this.pointTop + "px"
        });

        this.setPancelColor(this.hsb.h);
        this.setShowColor();
        util.css(this.elem_barPicker1, {
            left: this.hsb.h / 360 * (this.elem_barPicker1.parentNode.offsetWidth) + "px"
        });

        var hex = '#' + this.rgbToHex(this.HSBToRGB(this.hsb));
        this.Opt.change(this.bindElem, hex);
    },
    switch_current_mode: function () {
        this.current_mode = this.current_mode == 'hex' ? 'rgb' : 'hex';
        this.elem_inputWrap.innerHTML = this.getInputTpl();
    },
    bindMove: function (elem, fn, bool) {
        var _this = this;

        elem.addEventListener("mousedown", function (e) {
            _this.downX = e.pageX;
            _this.downY = e.pageY;
            bool ? fn.call(_this, _this.downX, _this.downY) : fn.call(_this, elem, _this.downX, _this.downY);

            document.addEventListener("mousemove", mousemove, false);
            function mousemove(e) {
                _this.moveX = e.pageX;
                _this.moveY = e.pageY;
                bool ? fn.call(_this, _this.moveX, _this.moveY) : fn.call(_this, elem, _this.moveX, _this.moveY);
                e.preventDefault();
            }
            document.addEventListener("mouseup", mouseup, false);
            function mouseup(e) {

                document.removeEventListener("mousemove", mousemove, false)
                document.removeEventListener("mouseup", mouseup, false)
            }
        }, false);
    },
    show: function () {
        util.css(this.elem_wrap, {
            "display": "block"
        })
    },
    hide: function () {
        util.css(this.elem_wrap, {
            "display": "none"
        })
        // document.body.removeChild(this.elem_wrap);
    },
    HSBToRGB: function (hsb) {
        var rgb = {};
        var h = Math.round(hsb.h);
        var s = Math.round(hsb.s * 255 / 100);
        var v = Math.round(hsb.b * 255 / 100);

        if (s == 0) {
            rgb.r = rgb.g = rgb.b = v;
        } else {
            var t1 = v;
            var t2 = (255 - s) * v / 255;
            var t3 = (t1 - t2) * (h % 60) / 60;

            if (h == 360) h = 0;

            if (h < 60) { rgb.r = t1; rgb.b = t2; rgb.g = t2 + t3 }
            else if (h < 120) { rgb.g = t1; rgb.b = t2; rgb.r = t1 - t3 }
            else if (h < 180) { rgb.g = t1; rgb.r = t2; rgb.b = t2 + t3 }
            else if (h < 240) { rgb.b = t1; rgb.r = t2; rgb.g = t1 - t3 }
            else if (h < 300) { rgb.b = t1; rgb.g = t2; rgb.r = t2 + t3 }
            else if (h < 360) { rgb.r = t1; rgb.g = t2; rgb.b = t1 - t3 }
            else { rgb.r = 0; rgb.g = 0; rgb.b = 0 }
        }

        return { r: Math.round(rgb.r), g: Math.round(rgb.g), b: Math.round(rgb.b) };
    },
    rgbToHex: function (rgb) {
        var hex = [
            rgb.r.toString(16),
            rgb.g.toString(16),
            rgb.b.toString(16)
        ];
        hex.map(function (str, i) {
            if (str.length == 1) {
                hex[i] = '0' + str;
            }
        });

        return hex.join('');
    },
    hexToRgb: function (hex) {
        var hex = parseInt(((hex.indexOf('#') > -1) ? hex.substring(1) : hex), 16);
        return { r: hex >> 16, g: (hex & 0x00FF00) >> 8, b: (hex & 0x0000FF) };
    },
    hexToHsb: function (hex) {
        return this.rgbToHsb(this.hexToRgb(hex));
    },
    rgbToHsb: function (rgb) {
        var hsb = { h: 0, s: 0, b: 0 };
        var min = Math.min(rgb.r, rgb.g, rgb.b);
        var max = Math.max(rgb.r, rgb.g, rgb.b);
        var delta = max - min;
        hsb.b = max;
        hsb.s = max != 0 ? 255 * delta / max : 0;
        if (hsb.s != 0) {
            if (rgb.r == max) hsb.h = (rgb.g - rgb.b) / delta;
            else if (rgb.g == max) hsb.h = 2 + (rgb.b - rgb.r) / delta;
            else hsb.h = 4 + (rgb.r - rgb.g) / delta;
        } else hsb.h = -1;
        hsb.h *= 60;
        if (hsb.h < 0) hsb.h += 360;
        hsb.s *= 100 / 255;
        hsb.b *= 100 / 255;
        return hsb;
    }
}

Color_picker.create = function (opt) {
    return new Color_picker(opt)
}

export default Color_picker;